Myocyte Plasma Membrane Potential Stabilization

Myocyte plasma membrane potential stabilization refers to the mechanisms by which muscle cells maintain a stable electrical charge difference (membrane potential) across their plasma membrane, particularly during the resting state. This stability is crucial for proper muscle function, including excitability and contraction. Key mechanisms include potassium channels (especially Kir channels mediating the inward rectifier potassium current, I_{K1}), the sodium-potassium ATPase pump, and other ion channels contributing to ionic gradients. Disruption of this stability can result in arrhythmias or muscular dysfunctions.

Other names

Cardiac myocyte membrane potential stabilizationSkeletal myocyte membrane potential stabilizationResting membrane potential maintenance in myocytes

Drugs modulate ion channel activity (e.g., blocking or opening channels), or affect ion pump function, thereby altering the membrane potential.